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How Do I Use Fiddler to Capture Web Traffic?
Feedback?If you need to capture HTTPS logs for troubleshooting issues, you can download, install, and use the Fiddler tool.
How do I use Fiddler to capture web traffic?
How do I use Fiddler?
How do I configure Fiddler to decrypt HTTPS traffic?
Solution:
Fiddler is used to perform HTTPS captures for products such as Cisco Jabber, Webex Desktop App & other similar integrations. The data captured by Fiddler should be added to a web ticket or escalated to Webex tech support to expedite issue resolution.
To use Fiddler for capturing HTTPS traffic:
- Download and install Fiddler from https://www.telerik.com/download/fiddler.
- Click the Start button to open the Start menu.
- Select Fiddler 4 (or your current Fiddler version).
The Fiddler application appears.
- Go to the Tools menu > Options...
The 'Options' window appears.
- Go to the HTTPS tab.
- Check the Capture HTTPS CONNECTs and Decrypt HTTPS traffic boxes, then click the OK button.
- On the 'Trust the Fiddler Root certificate?' security prompt that appears, click the Yes button.
- On the 'Security Warning' dialog box, click the Yes button. Follow the prompts to add the certificate.
- Note: Mozilla Firefox does not use the system’s proxy and certificate settings by default, and it requires some additional configuration. For help, see: WBX9000030844 - Configuring Mozilla Firefox for Fiddler to Capture HTTPS Traffic
- Close and then restart the program for which you want to gather logs.
- Reproduce the problem so the error or reported issue occurs.
- Go back to the Fiddler window, then go to File > Save > All Sessions....
Provide the Fiddler logs to the tech support agent along with a summary of the steps to replicate the problem.
To remove the Fiddler certificate:
- Go to your Start menu > All Programs > Fiddler 4 (or your current Fiddler version).
- Go to the Tools menu > Options....
The 'Options' window appears.
- Go to the HTTPs tab.
- Click Actions, then select Remove Interception Certificates from the drop-down.
- On the dialog that appears, click the Yes button.
- Click the OK button.
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